Add support for dynamic 'url' on remote validator, also adds support for requesting a GET request (defaults to POST)

Dynamic url follows same format as dynamic data function.

Signed-off-by: Eric Nakagawa <ericnakagawa@gmail.com>
Fixed bug incorrectly requesting url, and not type.

Signed-off-by: Eric Nakagawa <ericnakagawa@gmail.com>
Merge pull request #393 from ericnakagawa/master

Add support for dynamic 'url' on remote validator, also adds support for setting type: POST/GET